Eaton HKD3400C - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState

Engineered by Eaton, the HKD3400C is a 400A, 600V, 3-pole molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Its compact form optimizes panel space without compromising safety or performance, making it a practical choice for modern electrical installations.

Key Features

• Compact molded case design maximizes panel space, enabling efficient layouts in residential, commercial, and light industrial applications.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance across varying temperatures and load conditions.
• 3-pole, 400A, 600V configuration tailored for three-phase systems and higher-current circuits.
• OEM-compatible designed to work with matching Eaton OEM loadcenters and panelboards for seamless integration.
• Targeted protection guards against branch circuit overcurrent and short circuits, helping prevent equipment damage and downtime.

Technical Specifications

• Manufacturer: Eaton
• Part Number: HKD3400C
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Applications and Use Cases

Ideal for protecting feeders and branch circuits in a range of environments, the HKD3400C is well-suited for:

• Residential panelboards seeking reliable three-phase protection where applicable
• Commercial electrical panels requiring compact, space-efficient breakers
• Light industrial installations that demand robust protection for higher-current circuits
• Upgrading existing panels with OEM-compatible components to ensure consistent performance

Why Choose the HKD3400C

Choosing this Eaton breaker means aligning with a proven thermal-magnetic protection strategy that responds predictably to faults while maintaining steady operation under normal conditions. The 3-pole design supports three-phase systems, and the 400A rating covers substantial feeder protection without overcomplicating electrical layouts. When paired with matching OEM loadcenters and panelboards, it offers a cohesive, reliable protection solution that simplifies installation and ongoing maintenance.

Installation and Compatibility

Designed for straightforward integration, the HKD3400C pairs with compatible Eaton OEM loadcenters and panelboards to maintain consistent trip characteristics and coordination across your protection scheme. This makes it a practical upgrade option for projects aiming to standardize components and ensure predictable protection performance.

Whether you're assembling a new panel from the ground up or upgrading an existing distribution system, the Eaton HKD3400C delivers trusted protection for demanding electrical environments. Add it to your AmpState lineup for a dependable, industry-grade solution that prioritizes safety, space efficiency, and long-term reliability.